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EleoNora [17]
3 years ago
5

A statistician wants to know the average height of all men in the United States (US) ages 18-30. Select all the

Mathematics
2 answers:
nalin [4]3 years ago
7 0

Answer:

b,d

Step-by-step explanation:

jasenka [17]3 years ago
7 0

Answer:

The answer on ed 2021

Step-by-step explanation:

B: The population is all men in the US ages 18–30.

and

E: A sample is a selected group of men from the top 50 occupations in the US ages 18–30 from which their heights were measured.

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2 years ago
Select the correct answer. Which statement is correct with respect to f(x) = -3|x − 1| + 12?
Sati [7]

The correct answer is D

5 0
3 years ago
Consider the quadratic function f(x) = –2x2 + 4x – 2. Find the y-intercept and the equation of the axis of symmetry.
RoseWind [281]

Answer:

The y-intercept is -2

The equation of the axis of symmetry is x = 1 ⇒ 3rd answer

Step-by-step explanation:

* Lets revise the general form of the quadratic function

- The general form of the quadratic function is f(x) = ax² + bx + c,

 where a, b , c are constant

# a is the coefficient of x²

# b is the coefficient of x

# c is the y-intercept

- The meaning of y-intercept is the graph of the function intersects

 the y-axis at point (0 , c)

- The axis of symmetry of the function is a vertical line

  (parallel to the y-axis) and passing through the vertex of the curve

- We can find the vertex (h , k) of the curve from a and b, where

 h is the x-coordinate of the vertex and k is the y-coordinate of it

# h = -b/a and k = f(h)

- The equation of any vertical line is x = constant

- The axis of symmetry of the quadratic function passing through

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* Now lets solve the problem

∵ f(x) = -2x² + 4x - 2

∴ a = -2 , b = 4 , c = -2

∵ The y-intercept is c

∴ The y-intercept is -2

∵ h = -b/2a

∴ h = -4/2(-2) = -4/-4 = 1

∴ The equation of the axis of symmetry is x = 1

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3 years ago
Whats 4/9 divided by 3/7 equal
Alexeev081 [22]

Answer:

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Step-by-step explanation:

i d k if this is what ur looking for but hope this helped :)

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2 years ago
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